// This program accepts 3 integers from the user and displays the number of even values
// entered and the number of odd values entered
#include <iostream>
using namespace std;

//function prototypes
void countEvenOdd(int x, int y, int z , int& evens, int& odds);
bool even(int);

int main()
{
	int a, b, c, evencount = 0, oddcount = 0;

	// get 3 integers from the user
	cout << "Please enter 3 integers" << endl;
	cin >> a >> b >> c;
	countEvenOdd(a,b,c,evencount,oddcount);
	cout << "You entered " << evencount << " even integers" << endl;
	cout << "and " << oddcount << " odd integers" << endl;
	return 0;
}

// function countEven takes 3 integers as input and totals the number of even
// and the total number of odd integers.  Since it is returning 2 values to the
// calling function reference parameters must be used.
void countEvenOdd(int x, int y, int z, int& evens, int& odds)
{
	if (even(x))
		evens++;
	else odds++;

	if (even(y))
		evens++;
	else odds++;

	if (even(z))
		evens++;
	else odds++;

	return;
}

// function even takes one integer input and returns true if the input is an even
// number, returns false if the input is an odd number
bool even(int x)
{
	if (x % 2 == 0)
		return true;
	else return false;
}